Jet pump



L. ROSE Jan 8, 1952 JET PUMP Filed Aug. 21, 1945 mm, H wt 0% INVENTOR LEIGH L. ROSE ATTORNEY Patented Jan. 8, 1 952 UNITED STATES PATENT OFFICE J ET PUMP Leigh L. Rose, Los Angeles, Calif. Application August 21, 1945, Serial No. 611,857

This invention relates to a mixing unit of that 7 type by which liquid fertilizer, insecticide or gases are continuously admixed evenly in anyp'redeterpassage being enlarged to form a cylindrical fchamber l3 in which a. cylindrical mixing filler mined proportionwith astream of water and the I mixture thus produced is sprayed on flowers, grass, vegetable growth and any other vegetation.

The apparatus is further designed for use in conjunction with sprinkling means such as garden hose, sprinkler systems, etc., and may be used effectively to fertili e or treat vegetation, correct under pressure and to automatically regulate the proportion of the treating medium in accordance -with any variation in pressure of the stream of I water with which it is admixed;

g p-A'fur'ther object of my invention is the production of means for mixing liquid fertilizer or other treating medium with the stream of water which can be'easily and quickly changed either to adopt :the. x n appar s m r e e ly t h or low pressures of the water with which the apparatus is used, such differences often occurring in water systems in a single or in different municipalities, or to adapt the mixing apparatus for use in mixing various types of liquid chemicals or gases.

Among still further objects is the production of apparatus of its kind which is simple and inexpensive in construction, easy to operate and highly effective in use.

In the accompanying drawings forming part of this specification, Fig. 1 is a side elevation of my improved mixing unit which is partly broken away and shown in central longitudinal section; Fig. 2 is a side elevation of the changeable filler by which the mixing unit may be converted for high or low water pressure use or for use in mixing various types of liquid chemicals or gases with a stream of water; Fig. 3 is a section taken on the line 3-3 of Fig. 2.

In the drawings, and with particular reference to Figs. 1 and 2, A represents a cylindrical casing through which a stream of water under the usual pressure provided by municipal or other sources of water supply is conducted, said casing being adapted to be connected by a suitable threaded coupling ID with any suitable water supply duct such as I l. The casing is provided with an inlet passage [2 leading from the supply duct, said or core B of corresponding diameter is removably "seated thorugh its forward end. The forwardv end of said body adjoining the filler is connected with a coupling l4 which is detachably secured thereto by the threaded connection l5.

The filler B is formed with a forward cylindrical nozzle l 6 which corresponds in outer diameter with and projects into the longitudinal inner tubular passage I! through the coupling 14. In

this position the filler B is secured tightly between suitablepacking rings la in the chamber I3 of said casing by the coupling 14. The filler is is provided with an axially disposed inlet channel 120 which is of even diameter throughout its length and which is connectedat its rearward end with thexre'duced end of a forwardly converging passage 2!. This passage reduces the size ofthe stream of'water under normal pressure which is admitted from the supply duct H into the inlet channel in the filler.

'I he forward end of channel 20 is connected llt-ion'of which, for a portion of its length is of even 'and less diameter. This passage 22 is gradually with the inner end of a forwardly extending passage 22 of greater diameter, the rearward porenlarged by flaring forwardly and is connected with an'enlarged forwardly extending duct I! through the connector Hi. The rearward end of passage 22 is larger at its junction 23 with the channel 20 than the said channel 20 at which point liquid fertilizer, chemical or gas is admixed evenly with the flowing stream of water under pressure traversing the water channel through the filler as will be hereinafter described.

The force of the stream of water under normal pressure issueing from a suitable water supply system is utilized to introduce and thoroughly mix in the desired proportion, liquid fertilizer, insecticide or gas with said stream and to spray the mixture thus produced on any vegetation it is desired to treat. This mixture is maintained uniform by my improved mixing unit irrespective of fluctuations of water pressure such as usually occur in water systems and the mixture is produced in thoroughly mixed condition whereby more eflicient results are produced by the use of liquid fertilizer, insecticide or gas treating medium.

My improved mixing unit may be connected with a suitable receptacle (not shown) contain ing liquid fertilizer, insecticide or gas through a suitable supply pipe or hose 25. The latter is coupled to nipple 26 (Fig. 1), which extends from a lateral branch 21 extending from the side of the casing A. The body of the filler B between its end portions is formed with a rearwardly tapering depression which in cooperation with the casing A provides an annular chamber 28. A branch 21 on the casing has a passage 29 entering said chamber, the outer portion of said passage being connected by the nipple 26 and hose 25 with a suitable source of fluid. In this manner any suitable fluid in the form of liquid or gas is admitted into said chamber. The diameter of passage 22 being greater than the diameter of passage 20 at the junction 23 between said pas sages causes violent turbulent agitation of. the

stream of fluid adjacent to said junction. At' this junction an annular cluster of forwardly.

converging finely drilled feed channels 30, leading from chamber 28, enter the passage 22.

These feed channels converge forwardly andserve to evenly admix the liquid fertilizer, insecticide or gas with the stream of water at; said Junetion 23, the latter havin regulated reduced pressure effect or suction which draws minute steady streams from thecontents of the supply recep- Ita'cle (not shown) andthoroughly admixes same .in direct and even proportion corresponding with any variation in pressureof the stream of water provided by the souce of water supply.

7 A vacuum gauge 3| is provided in connection 'with thepassage 29 and a positive pressure gauge; 32 is connected with the water supply channel in the casing by whichtheoperation of the ap- ,.pjar.atus can be judged by an attendant from time ,"toitime. 'Theconstruction of my improved mixingunit permits ready changingof the filler B to provide any desiredvariation in diameter or sizesof the portions 201and 22 of the water channel and liquid or gas feed passages .30 and thus enable the user to easily regulate the mixture of thev liquidfertilizer, insecticide or gas to suit,

of the admixture .to be provided by the apparatus.

rlinfaccordance wijth the patent statutes I have 7 "described the principles of operation of my invention together with the construction thereof which 'Inow consider to represent the best embodiment the pressure of the water stream and the strength therein, a filler removably held in said chamber by said coupling, said filler having an inlet duct connected with said inlet passage, forwardly expanding duct means connected by an abruptly enlarged junction with the orifice of said inlet duct, an annular space between the inner wall of-said casing and the outer wall of said filler, a plurality of forwardly converging channels connecting said annular space with said expanding ductadjacent to said orifice, and afeedpassage for fluid entering said annular space, said fillerbeing removable from within saidcasing .by the separation of said casing and coupling, whereby a complete set of mixing channels and ducts of different proportions maybe substituted in said casing.

a i 3 63. a. R S

7 REFERENCES CITED The following references are .of record in the .file .of this patent:

UNITED STATES PATENTS 5 V Number Name Date 102.22g Cowing Apr. 26, 1370 1,036,871 Matheson Aug. 27, 19l2 1,748,488 McCabe Feb. 25, 1930 40 2,128,170 Stull Aug. 23, 1938 2,230,201 Hermann Jan. 28, 1941 2,271,722 Thornton Feb. 3, 1942 2,381.53!) Hayes Au /7, 1945 g FOREIGN PATENTS Number Country Date 203,315 Great Britain Sept. 1, 1923 

